Two-way lock for sliding doors



June 25, 1963 B. SAYLES THO-WAY LOCK FOR SLIDING DOORS 2 SheetsSheet 1 Filed Oct. 16. 19s;

FIG.

INVENTOR, LEONARD B. SAYLEs Arron/vs Y June 25, 1963 v Y s 3,094,861

TWO-WAY LOCK FOR SLIDING DOORS Filed Oct. 16, 1961 I 2 Sheets-Sheet 2 Pic-2.6. A Fm] 420' I I 39 l I IN VEN TOR,

LEb/VARD B. SAYLES Fl 6. O. ATTORNEY 3,094,861 TWO-WAY LOCK FOR SLIDING DGORS Leonard B. Sayles, 9081 Otto St., Downey, Calif. Filed Oct. 16, I961, Ser. No. 145,105 2 Claims. (Cl. Hi-95) The present invention relates to locks for. sliding doors wherein the door or doors may be locked against movementor released from either side thereof.

The present invention is particularly adaptable to commercial buildings employing slide doors as it saves time in the opening of a door or doors from either side thereof. Such a type of lock for slide doors provides an escape exit for persons within a building particularly when the door is locked on the outside.

It has been found that sliding doors which are manual- 1y bolted only from the inside often permits a thief to enter through a window, unbolt and open the doors, followed by backing a truck through the doorway into the building. The thief may then rob the building without being observed. The present invention, by locking both sides of the doors will prevent this type of thievery. Sliding doors locking from both sides require that a thief enter the building through a window and then move the stolen goods through the window. Such activity would readily be observed.

The two-way lock for sliding doors, of the invention, makes it possible for shop or plant personnel to enter and to, likewise, leave through shops doors. If shop doors are bolted on the inside, as is the present general practice, shop personnel are usually required to enter and to leave through office doors.

The means utilized in the present invention for locking a door from both sides is secure and sturdy and will not wear out under ordinary use. I

An object of the invention is to provide a two-way lock for doors, particularly of the sliding type, which is simple of construction, inexpensive in cost of manufacture, has no wearing parts, may be installed easily, easily adapted to different lengths and widths of doors, is reversible to fit either right or left hand sliding doors and which may be standardized as to the parts thereof to fit any door, and which is generally superior to devices for the purpose intended now known to the inventor.

With the above mentioned and other objects in View, the invention consists in the novel and useful provision, formation, construction and relative arrangement of parts, members and features all as shown in certain embodiments in the accompanying drawings, described generally and particularly pointed out in the claims.

In the drawing:

FIGURE 1 is a (fragmentary elevation of a pair of slid ing doors incorporating the invention;

FIGURE 2 is a fragmentary, enlarged sectional view,

on the line 2-2 of FIGURE 1;

FIGURE 3 is a detached fragmentary, sectional view,

showing the doors of FIGURES 1 or 2 slightly separated,

resultant upon actuation of certain elements of the present invention to release the sliding doors externally thereof; FIGURE 4 is a fragmentary, enlarged sectional view of the invention, the sliding doors of FIGURES l or 2 being separated with one element of the invention in a changed position from that of FIGURE 3, the figure showing release of a two-way lock from inside of the sliding doors;

FIGURE 5 is a fragmentary sectional view on the line 5-5 of FIGURE 2;

FIGURE 6 is a fragmentary sectional view on the line 6-6 of FIGURE 2;

FIGURE 7 is a fragmentary sectional view on the line 7--7 of FIGURE 2;

3,994,851 Patented June 25, 1963 FIGURE 8 is a fragmentary, partially sectional longitudinal view of the slide bolt or plunger of the invention;

FIGURE 9 is a fragmentary elevation of a single sliding door incorporating the invention;

FIGURE 10 is an enlarged sectional view on the line l(lltl of FIGURE 9; and,

FIGURE 11 is an enlarged fragmentary sectional view on the line 11-11 of FIGURE 9.

Referring now to the drawings, the present invention is adaptable to sliding doors generally whether of the single or dual type and likewise adaptable to swing doors as will hereinafter appear. In FIGURE 1 I have shown .a pair of sliding doors at I and 2 while in FIGURE 9 I have shown a single sliding door at 3.

While the present invention is adaptable to doors of either Wood or metal, the present invention, is shown secured to metal doors which incorporate a framing of angle stiles and rails to which is secured the door paneling. As shown, each door has inner and outer stiles 4 and 5 joined to upper and lower rails 6 and 7. Quite obviously the doors allow egress or ingress through a door opening in a structure. The door opening is bounded on the sides by uprights, posts or columns which in the present illustration of my invention are in the form of channel type jambs 8. As shown in the figures, sliding doors do not lie within the door opening but are exterior of the door opening and partly overlap the external walls of the building. As a rule, sliding doors are hung on rollers along the top edges, the rollers riding upon a track which is secured to the building, the overhead mounting being of a length sufficient to allow parting of the doors or door to expose the entire door opening. This type of structure forms no part of my invention but is mentioned to illustrate the environment within which my invention functions.

My invention will first be described in connection with a pair of doors 1 and 2 and wherein door 2 in this instance has secured to the stile 4 thereof an angular housing 9. One leg 10 of the housing is secured by bolt or bolts 11 to the inside of stile 4 to the inside of one leg 12 of stile 4. The opposite leg 13 of housing 9 is provided with a longitudinal bore 14 preferably of rectangular section and which bore extends between the top and the bottom surfaces of the leg. As strength of structure is desired, the leg 13 is of greater thickness or transverse dimension than the leg 10. The bore 14 accommodates therein a catch or keeper bar 15 and of rectangular section being complementary to the bore 14. The keeper bar 15 is of extended length so as to allow it to move within the bore 14. The keeper bar 15 is provided with a bayonet slot 16, one leg of the slot 17 opening transversely at one side 18 of the bar and communicating with a longitudinal slot 19. The arrangement is such that the keeper bar may be moved downwardly within the leg 13 of housing 9 and so as to close entrance to the transverse slot 17 or to be raised to the dotted position of FIGURE 7 so as to permit entrance within the bayonet slot through slot 17. In this connection, the keeper bar is reduced in transverse dimension from approximately the point 20 downwardly to the end 21 of the keeper bar while the portion above 26 to the top is enlarged in transverse dimension to provide a shoulder designated generally as 22 on opposite side faces of the keeper bar. This shoulder engages'the housing 9, particularly the leg 13 on opposite sides of the bore 14 and thereby limits downward movement of the keeper bar. The keeper bar is provided with a transverse bore 23 which is closed within the bore 14 when the keeper bar is elevated to the dotted line position of FIGURE 7 and exposed when the keeper bar is in the full line position of the same figure. The keeper bar is therethrough. Other locking means may be resorted to but a padlock is an expedient structure.

Door 1 has secured to stile 4 and likewise to the front panel 26 thereof and on the external surface of the door, a housing 27 adapted to eXtend laterally from leg 28 of stile 4. The housing has integrally formed therewith a handle member 29 terminating in a transverse leg 30 to provide an open slot between the front panel 26 and the handle 29 whereby the hand may engage the handle to move the door. The housing 27 and the leg 39 are secured to the stile and the front panel 26 by bolts 31. and 32. As shown, the bolt heads are not exposed exteriorly of the door. The housing 27 is provided with a transverse bore 33 and the bore 33 accommodates an elongated slide bolt or plunger 34. The bolt carries at one end 35 a disk type head 36 adapted to be gripped by the fingers for the purpose of moving the bolt inwardly or outwardly of the bore 33 of the housing. The leg 28 of the stile 4 for door 1 is provided with a transverse bore 37 inaxial alignment with the bore 33 so as to allow passage otf the slide bolt or plunger 34. The bolt has a length sufiicient to transversely bridge the leg 13 of housing 9 and to extend beyond the outer face of the leg 13 when the head 36 lies adjacent the outer surface of housing 27 as illustrated in FIGURE 2. The bolt is adapted, in the position shown in FIGURE 2, to be received in the longitudinal slot 19 of the bar keeper 15 When in the solid line position shown in FIGURE 7. Thus the bolt will lie between the top surface of the leg 13 of housing 9 and the end of longitudinal slot 19. When the bolt is not received within the vertical or longitudinal slot 19 but is moved outwardly therefrom, the bolt may be moved to the position shown in FIGURE 3, such outward movement is restricted by providing the bolt with a snap ring 37:: held within an annular groove formed in the bolt. In the position shown in FIGURE 3, the end of the bolt has moved free of engagement with the bar keeper 15.

To maintain the slide bolt 34 in the position shown in FIGURE 2, the housing 27 is provided between its top and bottom surfaces with a transverse bore 38- and the housing is countersunk at 39 and 40. The slide bolt 34 is transversely provided with a half-round groove 41, the radius of which is the same as. the radius of the bore 38. The construction is such that the bore 38 intersects the bore 33 substantially diametrically to the end that when the bolt 33 is in one position, the half-round groove merges with the bore 38, whereby the bolt or plunger 34 may be locked against movement. Thus in the position of FIGURES 2 and 6, I may provide a further padlock 42, the slide bolt 42a of which has one leg passed through bore 38 and the groove 41.

Reference is made to FIGURES 9 and wherein a single sliding door 3 is utilized and to limit inward movement of the door I provide a door stop 43 for engagement with a door stile. The door 3 is essentially the same in detail as the door 1 while the door jamb- 8 has secured thereto the housing 9. This is the only change that is required for a single door over a double door. However, in the case of a double door, such as 1 and 2 in FIGURE 2, the head of the bolt 11 is received in a bore 45 of leg 44 of stile 4.

The operation, uses and just described, are as follows.

I shall assume first that the slide bolt or plunger 34 has been passed transversely through the longitudinal slot 19 of the bayonet slot 16 and that the bar keeper is in the position of FIGURE 7. That is to say, the bar keeper 15 is locked in' this position by means: of padlock 25. I also assume that'la padlock 42 has its slide bolt passed through bore 38 and lies within the groove 41 of the slide bolt or plunger 34. Thus, the doors are locked together on both sides thereof and cannot be separated. If access from the outside is desired through the doors, upon application of a proper key to open padlock 42,

advantages of the invention the slide bolt 42a of the padlock 42 may be removed from bore 38 whereupon the bolt 34 may be moved outwardly by grasping the head 36 to the position shown in FIGURE 3. The bolt will be stopped in its outward movement by the snap ring 37a engaging the inner surface of leg 28 of stile 4. This releases the bolt from engagement with the bar keeper 15 whereupon the doors may be separated or one door only moved, as desired.

If again the doors are in the position of FIGURE 2, and it is desired to release the doors for opening from the inside of the building, the operator, upon using a proper key, may unlock padlock 25 and remove the slide bolt 24 from the {hole 23 of the bar keeper 15. Whereupon the bar keeper may be lifted upwardly from the solid line position of FIGURE 7 to the dotted line position thereof. This permits the bolt or plunger 34 to be moved from the longitudinal slot 19 through the transverse slot 17 and thus release the doors. This operation is illustrated in FIGURE 4. The bolt or plunger 34 has not been moved and remains locked in position. Obviously, to relock the door from the inside, the bar keeper 15 is lifted so as to permit passage of the bolt or plunger 34 inwardly of the bayonet slot so that the bar keeper may drop to the full line position of FIGURE 7 from the dotted line position there f. The same sequence of operation would be followed for the single sliding 'door and the locking means therefor as just described.

The present invention may be standardized as to size, so as to accommodate itself to substantially all forms of sliding doors and obviously the invention may be utilized on swing doors if so desired. The only change necessary for doors of different thicknesses would be the provision of different length bolts or plungers 34. Furthermore, the invention is adaptable to right or left hand, or so-called reversible doors. By securing a door or doors on both sides thereof, the likelihood of breaking through the doors by unauthorized persons is remote.

I claim:

1. A device for exteriorly and interiorly locking a slide door against movement, including: a pair of housings one housing of which is secured to a slide door and the other housing of which is secured to a door jamb or a second slide door, a slide bolt carried by the first housing, a bar type keeper provided with an outwardly opening transverse slot and a communicating longitudinal slot, movable within the second housing to expose entrance to the transverse slot or to close the same with a portion of the longitudinal slot exposed above the housing, said slide bolt adapted to extend through the longitudinal slot of the bar type keeper, means for locking the bar type keeper so that the lateral slot is not exposed and means tor locking the slide bolt against movement.

2. A device for locking a pair of sliding doors against relative movement, both doors provided with door frames, including: a bolt housing externally secured to the frame of one door, :and provided with a slide bolt, means carried bythe bolt housing for engagement with the slide bolt to lock the slide bolt against movement relative to the housing, a second housing carried by the frame of the second door, a movable bar type keeper carried by the second housing for engagement with the slide bolt when the slide bolt is locked against movement, and means for locking the bar type keeper against movement, said bar type keeper provided 'with a bayonet slot having a lateral slot and a longitudinal slot, the slots being in communication to receive the slide bolt.

References Cited in the file of this patent UNITED STATES PATENTS 1,274,181 Meyers July 30, 1918 1,845,458 Walton Feb. 16, 1932 2,676,829 Sterner Apr. 27, 1954 2,799,153 Petersen July 16, 1957 

2. A DEVICE FOR LOCKING A PAIR OF SLIDING DOORS AGAINST RELATIVE MOVEMENT, BOTH DOORS PROVIDED WITH DOOR FRAMES, INCLUDING: A BOLT HOUSING EXTERNALLY SECURED TO THE FRAME OF ONE DOOR, AND PROVIDED WITH A SLIDE BOLT, MEANS CARRIED BY THE BOLT HOUSING FOR ENGAGEMENT WITH THE SLIDE BOLT TO LOCK THE SLIDE BOLT AGAINST MOVEMENT RELATIVE TO THE HOUSING, A SECOND HOUSING CARRIED BY THE FRAME OF THE SECOND DOOR, A MOVABLE BAR TYPE KEEPER CARRIED BY THE SECOND HOUSING FOR ENGAGEMENT WITH THE SLIDE BOLT WHEN THE SLIDE BOLT IS LOCKED AGAINST MOVEMENT, AND MEANS FOR LOCKING THE BAR TYPE KEEPER AGAINST MOVEMENT, SAID BAR TYPE KEEPER PROVIDED WITH A BAYONET SLOT HAVING A LATERAL SLOT AND A LONGITUDINAL SLOT, THE SLOTS BEING IN COMMUNICATION TO RECEIVE THE SLIDE BOLT. 